/*
 * Copyright (c) MuleSoft, Inc.  All rights reserved.  http://www.mulesoft.com
 * The software in this package is published under the terms of the CPAL v1.0
 * license, a copy of which has been included with this distribution in the
 * LICENSE.txt file.
 */
package org.mule.compatibility.transport.jms.weblogic;

import org.mule.compatibility.transport.jms.DefaultJmsTopicResolver;
import org.mule.compatibility.transport.jms.Jms102bSupport;
import org.mule.compatibility.transport.jms.JmsConnector;
import org.mule.runtime.core.util.ClassUtils;

import java.lang.reflect.Method;

import javax.jms.Destination;
import javax.jms.Queue;
import javax.jms.Topic;

/**
 * Weblogic-specific JMS topic resolver. Will use reflection and a vendor API to detect topics.
 */
public class WeblogicJmsTopicResolver extends DefaultJmsTopicResolver {

  /**
   * Cached empty class array, used in the no-args reflective method call.
   */
  protected static final Class[] PARAMETER_TYPES_NONE = new Class[0];

  /**
   * Create an instance of the resolver.
   *
   * @param connector owning connector
   */
  public WeblogicJmsTopicResolver(final JmsConnector connector) {
    super(connector);
  }


  /**
   * For Weblogic 8.x (JMS 1.0.2b) will use Weblogic-specific API call to test for topic. For Weblogic 9.x and later (JMS 1.1)
   * this call is not required due to the unified messaging domains.
   *
   * @param destination a jms destination to test
   * @return {@code true} if the destination is a topic
   */
  @Override
  public boolean isTopic(final Destination destination) {
    // don't check the invariants, we already handle Weblogic's case here

    boolean topic = destination instanceof Topic;

    if (topic && destination instanceof Queue && getConnector().getJmsSupport() instanceof Jms102bSupport) {
      try {
        Method topicMethod = ClassUtils.getPublicMethod(destination.getClass(), "isTopic", PARAMETER_TYPES_NONE);

        topic = (Boolean) topicMethod.invoke(destination);
      } catch (Exception e) {
        logger.warn(e.getMessage());
      }
    }
    return topic;
  }

}
